What is the reason for the flow through the turbine flowmeter not showing?

Turbine flowmeters sometimes find such and other problems suddenly during operation. The number one problem is that there is flow in the pipeline and the display does not show it. The following is to sort out the reasons why the flow does not display. 1. There are three reasons for this: 1. Is the display screen bright? Make sure there is no power supply? If the power supply is normal, the display does not light up, indicating that the meter head of the electromagnetic flowmeter is burned, or the display is broken, and it must be returned to the original factory for repair or replacement. 2. The display is on, and you can see that the flow is worth it. If there is fluid flowing in the pipeline, but there is no normal flow, there are two situations. First, the flow is lower than the lower limit of the flowmeter calibration, and the flowmeter cannot be detected. flow. Therefore, the normal flow value is not displayed. Second, if there is a problem with the internal settings, you can ask the original engineer to solve it. 3. Water enters the flowmeter body, causing the electrode to not work normally, and there may be no flow rate displayed. 2. The reasons for the failure not to display the flow are: 1. Wiring. Before wiring the turbine flowmeter, confirm that its installation orientation and direction are correct, and clean it on site. The wiring of the turbine flowmeter includes the connection of the power line, the input/output signal line, the sensing signal line and the working ground line. 2. Input/output signal. Most turbine flowmeters can be programmed and detected through the external PLC, and can also receive input commands from the main control system through the communication bus. Therefore, the turbine flowmeter is equipped with access points such as signal input contacts and critical alarm commands for measured values. The output signal can be connected through the analog point, and can also be combined with the output signal to realize the connection with the PC through the RS-232 communication interface. 3. Sensor connection. If the flowmeter and the sensor are installed separately, a connection is required between the flowmeter and the sensor, which is used to pass the sensing current through the measuring terminal of the flowmeter (actually the magnetic pole and voltage measuring unit) to measure the test parameters. 4. Ground wire. Because the working current of the turbine flowmeter is small, it is easily disturbed by the change of the external electric field, so its power supply and signal line must be equipped with a grounding wire to ensure the accuracy of the measurement data and eliminate the frequent oscillation of the data during the measurement process.
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